This happens via web, aria2c, or in-game. Any portal downloads throttle to approx 10-30KB/s, making downloading any mods over a megabyte a significant hassle (multiple hours). Running an MTR shows no loss, worst ping is barely over 100ms with little variance.
aria2c
![Image](https://forums.factorio.com/images/ext/2a0fd7bf042c0bfabf79bddcfdb3fddd.png)
web
![Image](https://forums.factorio.com/images/ext/2a845c9670f0802f3533444bac8e06c8.png)
in-game (well over 60s in)
![Image](https://forums.factorio.com/images/ext/f7408fc8865d0fa672d0e31e92692a2d.png)
Any ideas?